Road-surfacer.



W. S. BUNKEH.

ROAD SURFACER.

APPLlcATmN FILED FEB. 25. |915.

1,226,637. Patented May 22, 1917.

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W. S. BUNKER.

ROAD SUBFACER.

APPLICATION FILED FEB. 25| |916.

1,226,637. Patented May22,1917.

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narran `sra 1 ontarien WARD S. BUNKER, OF WAKESHA, WISCONSIN.

ROAD-sunraonn.

Speccaton of Letters Patent.

Patented May 22, 1917.

Application led February 25, 1916. Serial No. 80,332.

"v'ide a road working implement of rigid,

unyielding construction with converging metal scraper blades or wingsfixed rigidly in their angular relation to each other, though,vertically adjustable front and rear to enable it to scrape more orless of the surface of the road into the ruts or hollows thereof and to`enable it to be carried in an inclined position when desired to surfacea graded or crowned road.

Another object `of the invention is to perfect details ofconstruction ofsuch a road surfacer.

wWith the above and other objects in view the invention consists in theroad surfacer as herein claimed.

teferrng to the accompanying drawings, :in which like characters ofreference indicate the same parts in the different views,

Figure 1 is a perspective view of a road surfacer ctnistructed inaccordance with this invention; j i

F 2 is a central longitudinal sectional view thereof;

Fig. 3 is a plan view thereof;

Figli is a sectional view of the rear end thereof; and,

Fig. 5 is a scraper bar.

ln these drawings 10 indicates a bent or arched tubular axle on whichwheels 11 are mounted and to the center of which is secured a reach 12,the front end of which detail sectional view of the j may be connectedwith the front axle l3nt any farm wagon and secured by the king bolt1dthereof, thus taking the place of the reach of such wagon. Suitablehounds or braces 12 connect the reach with the aXle 10 to rigidly braceit in place thereon. Mounted in suitable brackets on the reach 12 areadjusting levers 15 and 16 for the front and rear ends of the` scraper,each lever carrying a segmental grooved pulley 17 to which a supportingchain 18 is secured and passes downardly through yopenings in the reach,while locking means on saidievers engage notched sectors 20 on thebrackets 17 to lock the levers in their adjustments.

The scraper which is carried beneath the reach and is connected to thechains 18 cornprises a pair of bars arranged obliquely to the line ofdraft with their divergent ends foremost. Each of these bars is formedof an upper angle iron strip 21 with a broad vertical face and itshorizontal flange riveted to the horizontal flange of a smaller angleiron strip 22 the full length thereof,

such smaller angle iron strip 22 having a,

removable face formed of a strip of sheet metal 23 secured thereto, andpreferably 1n the same vertical plane with and abutting against thevertical face of angle strip 21.

Near their front ends the scraper barsv or wings are connected by achanneliron brace 24 extending transversely across the device, and thelconnections between this brace and the scraper bars are rigid7 beingpreferably formed by angle iron brackets 25` riveted to the oppositesides of the upstanding flanges of angle strips 21 and bolted to thecross brace 24. Near their rear ends the scraper bars are similarlyconnected by a shorter cross brace 26 and the chains 1S are connected tothe cross braces 2d and 26 respectively. In addition to the chains 1Sthere are guide chains 27 and 28 connecting the cross bars 2d and 26respectively near their ends to suitable hooks 29 on the reach. Thesechains serve to guide the scraper and keep it centered on the line ofdraft though greater obstacles may be encountered by one scraper bladethan by the other. Draft chains 30 connect with. the upper angle iron 21of each bar of the scraper a short distance behindthe connections withthe cross bar 24 and extend obliquely forward where they connect with anequalizing ring 31. A

,coupling chain 32 has one end connected with the equalizing ring whilethe other end is passed beneath the axle 13 and around the tongue 33just in front of the draft rod 34 thereof, and has a hook 35 on its endto be engaged with its intermediate portion so as to form a loopsurrounding the tongue.

In operation the rigid scraper frame resting on the surface of the roadis drawn by the traction chains 30 and is held in place against lateraldeflection by the guide chains 27 and 28 so that even though greaterresistance may be opposed to the forward travel of one scraper bladethan to the other, auch resistance will be overcome and the sun facescraped to a smooth even road-bed without disturbing the line of travelof'the device. The frame being rigid neither scraper bar thereof iscapable of movement independent of theyother, yand consequently will notdrop into holes or depressions*intheroadway to increase theirregularity, but such material as is loosened thereby will be drawntoward the center of the roadway and deposited in such depressions, allsurplus material being left in the center of the road. The front liftinglever 15 is used to raise the surfacer whenmoving from one place toanother and for turning, while the rear lifting lever 16 is used at suchtimes, and also to govern the amount of dirt brought to the center. Ifat any time the surfacer is gathering enough dirt to leave a ridge inthe center, the rear end thereof is raised sufficiently to allow thedirt to distribute under the bars, thus making 'a perfect grade.`

The construction of the surface frame is entirely of metal and thescraping blade 23 whichis the only part subject to wear is easilyremovable and is so arranged that it may be reversed end to end so as toincrease the durability thereof. The angle iron construction ofthescraper bars with the lower f receive its draft therefrom, but it bearswith its full weight upon'the surface of the road and is drawn directlyfrom the tongue of the vehicle through the draft chains 30 and 32, theguide chains 18 serving to prevent lateral `1 movement and to compel theblades to travel in the line of draft.y One or both of the hand leversmay be operated to give the desired v inclination to the scraper frameVat timesy and to lift the scraper frame free from the ground when it isout of operation, as when traveling from place. to place, or whenturning.

What I claim as new and desire to secure by LettersvPatent is:

1. A. road surfacer, comprising a rear axle, a reach thereon adapted forconnection with a front axle, front and rear lifting means on the reach,and a rigid frame having converging scraper bars, the front and rearends of said frame being connected to the front and rear lifting meansrespectively.

2. A road surfacer, comprising a rear axle, a reach thereon adapted forconnection with a front axle, independent front and rear lifting meanson the reach, a rigid frame having converging scraper bars, the frontand rear ends of said frame being connected to the front and rearlifting means respectively, guide chains connecting the front and rearends of the frame with the reach, and draft chains connected with thescraper bars near their front ends and connected together and having aloop to pass around the tongue of the front axle.

3. In a road surfacer, a rigid scraper frame comprising a pair ofconverging scraper bars, each consisting of an upper angle iron and asmaller angle iron secured thereto with its inner face offset from theinner face of the upper angle iron, and a removable scraper bladesecured to the vertical flange of the lower angle iron and abuttingagainst and flush with the inner face of the upper angle iron, angularbrackets secured to the inner and outer faces of the upper angle iron,and cross bars secured to said brackets.

4. In a road surfacer, a scraper bar, comprising an upper angle iron, asmaller lower angle iron secured to the horizontal flange at the loweredge thereof and having its vertical face offset from the vertical faceof the upper angle iron, and a scraper blade removably secured to thevertical flange of thel lower angle iron with its inner face Hush withthe inner face of the upper angle iron. In testimony whereof, I aiix mysigna-V ture, in presence of two witnesses.

WARD S. BUNKER. Witnesses:

J. M. DERTHICK, KATHERINE HOLT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. C.

